CN115773162A - Water replenishing and deoxidizing structure of steam exhaust device and water replenishing and deoxidizing method thereof - Google Patents
Water replenishing and deoxidizing structure of steam exhaust device and water replenishing and deoxidizing method thereof Download PDFInfo
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- CN115773162A CN115773162A CN202211536118.7A CN202211536118A CN115773162A CN 115773162 A CN115773162 A CN 115773162A CN 202211536118 A CN202211536118 A CN 202211536118A CN 115773162 A CN115773162 A CN 115773162A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 245
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001502 supplementing effect Effects 0.000 claims abstract description 48
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 42
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 34
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 34
- 239000001301 oxygen Substances 0.000 claims abstract description 34
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 8
- 230000009471 action Effects 0.000 claims abstract description 4
- 230000003020 moisturizing effect Effects 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 19
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000009825 accumulation Methods 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000013589 supplement Substances 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 abstract description 3
- 230000008020 evaporation Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 27
- 230000000694 effects Effects 0.000 description 17
- 238000004781 supercooling Methods 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 230000005587 bubbling Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000006392 deoxygenation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
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Abstract
The invention discloses a water replenishing and deoxidizing structure of a steam exhaust device and a water replenishing and deoxidizing method thereof, belonging to the technical field of steam turbine devices; the structure comprises a steam exhaust device shell, wherein the upper part of the steam exhaust device shell is provided with a steam exhaust device throat, the upper part of the steam exhaust device throat is communicated with a low-pressure cylinder of a steam turbine, the middle part of the steam exhaust device shell is provided with a steam exhaust port, two sides of the steam exhaust port are provided with a hydrophobic water supplementing and oxygen removing area, the lower part of the hydrophobic water supplementing and oxygen removing area is provided with a water seal structure, and the middle part of the hydrophobic water supplementing and oxygen removing area is provided with a hydrophobic energy dissipation collecting pipe group; the invention automatically forms a semi-closed space under the action of water seal, water is supplied for spraying from the top, steam flowing in the drain header or steam of drain flash evaporation rises from the bottom, an optimal heat exchange model is realized, the whole heat exchange process is that countercurrent heat exchange of cold and hot media is carried out in the vertical direction, particles in spraying can be supported by steam flow, the particles are contacted with the steam for a long time, the heat exchange residence time is long, and the heat exchange is more sufficient.
Description
Technical Field
The invention relates to a water supplementing and deoxidizing structure of a steam exhaust device and a water supplementing and deoxidizing method thereof, and belongs to the technical field of steam turbine devices.
Background
The steam exhaust device is used for a direct air cooling unit, is used as a flow guide channel for steam turbine exhaust to an air cooling island, and is also used as a container for draining, expanding and discharging, condensing a water tank and supplementing water.
The water replenishing in the steam exhaust device is used for deoxidizing, the common method is to directly spray at the throat part, as the flow velocity of the exhaust steam in the steam exhaust device is higher and can reach 60m/s, the contact time of the water replenishing and the exhaust steam is very short, and the heating effect is limited; particularly, under the background of deep peak regulation operation and long-term low-load operation of the conventional thermal power plant, the water supplement amount is larger, the exhaust steam amount is smaller, the heating capacity of the exhaust steam on the supplemented water is lower, the supercooling degree of the condensate water of the hot well is larger, and the oxygen removal effect is not ideal.
Disclosure of Invention
The invention aims to: aiming at the existing problems, the water replenishing and deoxidizing structure of the steam exhaust device and the water replenishing and deoxidizing method thereof are simple and reliable in structure, not only can perform energy dissipation and discharge on the drain water of the steam turbine, but also can perform water replenishing and deoxidizing by utilizing waste heat of the steam turbine, and can perform reinforced deoxidizing by replenishing steam even under the condition of large-flow water replenishing.
The technical scheme adopted by the invention is as follows:
a water replenishing and deoxidizing structure of a steam exhaust device comprises a casing of the steam exhaust device, wherein the upper part of the casing of the steam exhaust device is provided with a throat part of the steam exhaust device, the upper part of the throat part of the steam exhaust device is communicated with a low-pressure cylinder of a steam turbine, and the lower part of the throat part of the steam exhaust device is communicated with the casing of the steam exhaust device;
the middle part of exhaust steam device casing is provided with the steam extraction mouth the both sides of steam extraction mouth set up hydrophobic moisturizing except that oxygen district, the lower part in hydrophobic moisturizing except that oxygen district is provided with water seal structure the middle part in hydrophobic moisturizing except that oxygen district is provided with hydrophobic energy dissipation nest of tubes the upper portion in hydrophobic moisturizing except that oxygen district is provided with moisturizing mechanism one side in hydrophobic moisturizing except that oxygen district is provided with the baffle, exhaust steam device casing and water seal structure form semi-closed structure.
Further, the water seal structure is including fixed water seal ponding board that sets up on the exhaust apparatus casing to and the fixed lower water feeding plate that sets up on the baffle, water seal ponding board sets up in the below of ponding board down, at the downside of ponding board still fixed water seal board that is provided with down, and it forms the liquid seal to pass through the liquid level and pass through water seal board.
Furthermore, the water seal structure still includes the last ponding board that sets up on the exhaust apparatus casing fixedly, go up the ponding board and be located the top of ponding board down, liquid flows into the water seal ponding board again from last ponding board to ponding board down to form the route of turning back.
Furthermore, water seal ponding board includes the bottom plate and sets up in the bottom plate and keeps away from the overflow end plate of steam supplementing device casing tip, the height and the overflow plate top height of water seal board bottom overlap, perhaps, the height of water seal board bottom is less than the overflow plate top height.
Furthermore, a steam supplementing pipe is further arranged at the position, close to the connecting angle of the lower water collecting plate and the water sealing plate, and a plurality of open holes are formed in the top of the steam supplementing pipe.
Further, the hydrophobic energy dissipation header group comprises a plurality of groups, and each group is provided with a plurality of hydrophobic energy dissipation headers.
Furthermore, moisturizing mechanism is including the female pipe of moisturizing that is used for supplying water the bottom of the female pipe of moisturizing still is provided with a plurality of atomizing nozzle side by side.
Further, the top of moisturizing mechanism still is provided with the overhead gage, the overhead gage is fixed to be set up on the moisturizing device casing, the overhead gage slope sets up, just one side that the overhead gage is fixed in the moisturizing device is higher than the opposite side, and the height that highly is less than the baffle top of one side that the moisturizing device casing was kept away from to the overhead gage.
Furthermore, the water supplementing mechanism is arranged between one side, far away from the steam supplementing device shell, of the upper baffle and the partition plate, and the position of the water supplementing mechanism is not higher than one side, far away from the steam supplementing device shell, of the upper baffle.
The water replenishing and deoxidizing method for the steam exhaust device adopts the water replenishing and deoxidizing structure for the steam exhaust device, and comprises the following steps of:
in a conventional operation working condition, the water supplement enters an atomizing nozzle through a water supplement main pipe, atomized spraying is carried out on the top in a semi-closed space formed by the partition plate, the lower water accumulating plate, the water sealing plate and the water sealing water accumulating plate, and then the atomized spraying is converged on the upper water accumulating plate at the bottom to form a water film which flows into the lower water accumulating plate and is converged again; forming a water film again, allowing the water film to flow into the water-sealed water accumulation plate, forming a water seal under the action of the water seal plate, and finally, forming the water film through the water-sealed water accumulation plate to exchange heat with the exhaust steam in the shell of the steam exhaust device again and discharging the exhaust steam into a water tank of the steam exhaust device;
when the unit operates in the deep peak-shaving operation condition, although the steam turbine exhaust amount is small, the steam turbine is easy to generate hydrophobic steam, the hydrophobic steam is large, more heat is provided for supplementing water and heating, and the whole operation process is consistent with the conventional operation condition;
when the water replenishing operation condition is high, when the unit is high in flow water replenishing, the heat provided by drainage is insufficient, after heat exchange is carried out in the semi-closed space, the internal pressure is reduced, and exhaust steam automatically enters the semi-closed space through the space formed by the upper baffle and the partition plate to exchange heat with the water replenishing; the heat of drainage and the heat of exhaust steam are fully utilized; the steam with lower quality is introduced through the steam supplementing pipe to be used as a heat source to participate in heat exchange, and the steam is sprayed out of the steam supplementing pipe and exchanges heat with the water film of the lower water collecting plate and the water film of the upper water collecting plate in a countercurrent mode to exchange heat with the water sprayed by the atomizing nozzles.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method thereof, a semi-closed space is automatically formed under the water seal effect, water is sprayed from the top, steam flowing into a drain header or steam of drain flash evaporation rises from the bottom, an optimal heat exchange model is realized, the whole heat exchange process is that countercurrent heat exchange of cold and hot media is carried out in the vertical direction, particles in spraying can be supported by steam flow and are in contact with the steam for a long time, the heat exchange residence time is long, and the heat exchange is more sufficient;
2. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method of the water replenishing and deoxidizing structure, waste heat of steam turbine drainage is fully utilized to heat water replenishing, energy is saved, consumption is reduced, the problem that a conventional drainage flash tank is high in operation temperature can be solved, operation safety is improved, meanwhile, the degree of supercooling is high in the initial stage of water replenishing, an atomization form is adopted, the contact area with steam is increased, the degree of supercooling is reduced in the later stage, a film formation form is adopted, surface tension of water can be overcome, oxygen can be separated out easily, and deep deoxidization is achieved;
3. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method of the water replenishing and deoxidizing structure, steam is replenished from the bottom during large-flow water replenishing, and sequentially passes through multi-layer water film heat exchange and atomization heat exchange, so that the utilization rate of replenished steam heat is high compared with a common deoxidizing mode of bubbling through holes of a hot well, the application range of water replenishing and deoxidizing is also expanded, the structure is simple, maintenance is not needed basically during use, and the water replenishing and deoxidizing structure is very convenient for new construction or modification of old units.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the interior of the hydrophobic moisturizing deoxygenation zone of the present invention.
The labels in the figure are: 1-a steam exhaust device throat part, 2-a steam exhaust device shell, 3-a steam exhaust port, 4-a hydrophobic energy dissipation header, 5-a partition plate, 6-an upper baffle plate, 7-an upper water accumulation plate, 8-a lower water accumulation plate, 9-a water seal plate, 10-a water seal water accumulation plate, 11-a steam supplementing pipe, 12-a water supplementing main pipe and 13-an atomizing nozzle.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
A water supplementing and oxygen removing structure of a steam exhaust device is shown in figures 1 and 2 and comprises a steam exhaust device shell 2, wherein the upper part of the steam exhaust device shell 2 is provided with a steam exhaust device throat part 1, the upper part of the steam exhaust device throat part 1 is communicated with a low-pressure cylinder of a steam turbine, and the lower part of the steam exhaust device throat part 1 is communicated with the steam exhaust device shell 2;
the middle part of exhaust steam device casing 2 is provided with steam extraction mouth 3 the both sides of steam extraction mouth 3 set up hydrophobic moisturizing except that the oxygen district, the lower part in hydrophobic moisturizing except that the oxygen district is provided with the water seal structure the middle part in hydrophobic moisturizing except that the oxygen district is provided with hydrophobic energy dissipation header 4 group the upper portion in hydrophobic moisturizing except that the oxygen district is provided with moisturizing mechanism one side in hydrophobic moisturizing except that the oxygen district is provided with baffle 5, exhaust steam device casing 2 and water seal structure form semi-closed structure.
In this embodiment, form half confined space automatically under the water seal effect, the moisturizing is spout from the top, and the steam that hydrophobic header flowed in or the steam of hydrophobic flash distillation rise from the bottom, has realized better heat transfer model, and whole heat transfer process carries out the counter current heat transfer of cold and hot medium on vertical direction, and the extension is with the contact time of steam contact, and the heat transfer is more abundant.
On the basis of the above specific design, as a more specific design, the water replenishing mechanism includes a water replenishing main pipe 12 for supplying water, and a plurality of atomizing nozzles 13 are further arranged side by side at the bottom of the water replenishing main pipe 12.
In this design, different with traditional structure, the design of this structure adopts fog nozzle to realize being vaporific form when the moisturizing is advanced into, just also explains, and liquid is the graininess and enters into hydrophobic moisturizing except that oxygen district, and on the basis of this design, the liquid that is the minor diameter graininess can have certain effect of holding up under the effect of steam, and this effect makes graininess liquid can contact with steam for a longer time, better in the effect of heat exchange, more do benefit to the effect of deoxidization.
On above-mentioned specific design basis, as more specific design, the water seal structure is including fixed water seal ponding board 10 that sets up on steam exhaust device casing 2 to and fixed lower water supply plate that sets up on baffle 5, water seal ponding board 10 sets up in the below of ponding board 8 down, and the downside of ponding board 8 is still fixed and is provided with water seal board 9 down, and it forms the liquid seal to pass through water seal board 9 that the liquid level does not pass through.
In a further design, the water seal structure further comprises an upper water accumulating plate 7 fixedly arranged on the steam exhaust device shell 2, the upper water accumulating plate 7 is positioned above the lower water accumulating plate 8, and liquid flows into the water seal water accumulating plate 10 from the upper water accumulating plate 7 to the lower water accumulating plate 8 and forms a folded path.
More specifically, a gap for liquid circulation exists between the end part of the upper water collecting plate 7 and the partition plate 5, a gap for liquid circulation exists between the end part of the lower water collecting plate 8 and the steam supplementing device shell, and then the water enters the water sealing water collecting plate 10, and due to the arrangement of the water sealing plate 9, the liquid sealing effect is realized at a certain liquid level height of the liquid. In the present design, as its outstanding effect, since the liquid is gradually accumulated onto the upper water collecting plate 7, it forms a water film entering when flowing through the lower water collecting plate 8 into the water-sealed water collecting plate 10 in turn. On the one hand, the path of the liquid flow is increased on the basis of the effect of the return, and on the other hand, the effect of the heating by means of the water film is increased. The water replenishing and heating are effectively realized more fully by combining the effects, so that the oxygen removing effect is better realized.
Based on above-mentioned specific design basis, as more specific design, water seal ponding board 10 includes the bottom plate and sets up in the bottom plate and keeps away from the overflow end plate of mend vapour device casing tip, the height and the overflow plate top height of 9 bottoms of water seal board overlap, perhaps, the height that highly is less than the overflow plate top height of 9 bottoms of water seal board. In this design, it is preferred that the water seal plate 9 has a bottom height that overlaps the top height of the overflow plate. However, it should be further noted that even if the height of the bottom of the water seal plate 9 is lower than the height of the top of the overflow plate, there is a passage for fluid communication between the bottom of the water seal plate 9 and the base plate.
On the basis of the above specific design, in a further design, taking fig. 1 as an illustration, a steam supply pipe 11 is further disposed near a joint of the lower water collecting plate 8 and the water sealing plate 9, and a plurality of openings are disposed on a top of the steam supply pipe 11. Based on the design of moisturizing pipe, its concrete structure is the design of body structure, and on concrete structural design, be provided with a plurality of trompils on the top of moisturizing pipe 11, it is a plurality of the trompil is a style of calligraphy and arranges to evenly distributed is at the top of moisturizing pipe 11.
As a more specific design, the sets of hydrophobic energy-dissipating headers 4 comprise a plurality of sets, each set having a plurality of hydrophobic energy-dissipating headers 4. And as shown in figure 2, the hydrophobic energy dissipation manifold 4 groups comprise 2 groups, and each group of hydrophobic energy dissipation manifolds 4 are uniformly arranged in a straight line shape at equal intervals. And in the specific assembly relation design, the drainage energy dissipation header 4 group is welded and fixed on the steam compensating device shell.
Further optimal design, in specific structural design, the top of moisturizing mechanism still is provided with overhead gage 6, overhead gage 6 is fixed to be set up on the moisturizing device casing, the slope of overhead gage 6 sets up, just one side that overhead gage 6 is fixed in the moisturizing device is higher than the opposite side, and the height that highly is less than the height at 5 tops of baffle of one side that the moisturizing device casing was kept away from to overhead gage 6.
In this design, as specific explanation, the main objective of the design of overhead gage 6 is in order to provide a resistance for steam, avoids the direct upflow of steam to walk away, simultaneously, on specific structural design, the slope setting of this design of adoption, can effectual messenger's steam rise in-process receive overhead gage 6's resistance to return to again in the hydrophobic moisturizing oxygen removal district to impel the effect of heat exchange more, fully utilize heat energy.
Meanwhile, in consideration of the full utilization of steam, as a more specific design, the water supplementing mechanism is arranged between one side of the upper baffle plate 6, which is far away from the steam supplementing device shell, and the partition plate 5, and the position of the water supplementing mechanism is not higher than one side of the upper baffle plate 6, which is far away from the steam supplementing device shell.
Example 2
The steam discharged by the low-pressure cylinder of the steam turbine is discharged to the air cooling island through the throat part of the steam supplementing device, the shell of the steam supplementing device and the steam discharging port 3 in sequence.
The utility model provides an exhaust apparatus moisturizing deoxidization method, adopts an exhaust apparatus moisturizing deoxidization structure in embodiment 1, including the operating condition of multiple operating mode, based on the design of above-mentioned structure, realize the normal operating of multiplex condition, concrete step is as follows:
in a conventional operation condition, supplementing water enters the atomizing nozzles 13 through the supplementing main pipe 12, atomized spraying is carried out on the top in a semi-closed space formed by the partition plate 5, the lower water accumulating plate 8, the water sealing plate 9 and the water sealing water accumulating plate 10, and then the supplementing water is converged on the upper water accumulating plate 7 at the bottom to form a water film which flows into the lower water accumulating plate 8 and is converged again; a water film is formed again and flows into the water-sealed water accumulating plate 10, a water seal is formed under the action of the water sealing plate 9, and water is finally supplied and is formed through the water-sealed water accumulating plate 10 to exchange heat with the exhaust steam in the steam exhaust device shell 2 again and then is discharged into a water tank of the steam exhaust device;
when the unit operates in the deep peak-shaving operation condition, although the steam turbine exhaust amount is small, the steam turbine is easy to generate hydrophobic steam, the hydrophobic steam is large, more heat is provided for supplementing water and heating, and the whole operation process is consistent with the conventional operation condition;
when the water replenishing operation condition is high, when the unit is high in water replenishing, the heat provided by drainage is insufficient, after heat exchange is carried out in the semi-closed space, the internal pressure is reduced, and exhaust steam automatically enters the semi-closed space through the space formed by the upper baffle 6 and the partition plate 5 to exchange heat with water replenishing; the heat of drainage and the heat of exhaust steam are fully utilized; the steam with lower quality is introduced through the steam supplementing pipe 11 to be used as a heat source to participate in heat exchange, and the steam is sprayed out from the steam supplementing pipe 11 and exchanges heat with the water film of the lower water accumulating plate 8 and the water film of the upper water accumulating plate 7, and then reversely flows to exchange heat with the water spray of the atomizing nozzle 13.
In summary, the following steps:
1. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method thereof, a semi-closed space is automatically formed under the water seal effect, water is sprayed from the top, steam flowing into a drain header or steam of drain flash evaporation rises from the bottom, an optimal heat exchange model is realized, the whole heat exchange process is that countercurrent heat exchange of cold and hot media is carried out in the vertical direction, particles in spraying can be supported by steam flow and are in contact with the steam for a long time, the heat exchange residence time is long, and the heat exchange is more sufficient;
2. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method of the water replenishing and deoxidizing structure, waste heat of steam turbine drainage is fully utilized to heat water replenishing, energy is saved, consumption is reduced, the problem that a conventional drainage flash tank is high in operation temperature can be solved, operation safety is improved, meanwhile, the degree of supercooling is high in the initial stage of water replenishing, an atomization form is adopted, the contact area with steam is increased, the degree of supercooling is reduced in the later stage, a film formation form is adopted, surface tension of water can be overcome, oxygen can be separated out easily, and deep deoxidization is achieved;
3. according to the water replenishing and deoxidizing structure of the steam replenishing device and the water replenishing and deoxidizing method of the water replenishing and deoxidizing structure, steam is replenished from the bottom during large-flow water replenishing, and sequentially passes through multi-layer water film heat exchange and atomization heat exchange, compared with a common deoxidizing method of bubbling through holes of a hot well, the utilization rate of steam heat is high, the application range of water replenishing and deoxidizing is also expanded, the structure is simple, maintenance is not needed basically during use, and the water replenishing and deoxidizing structure is very convenient for new construction or modification of old units
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The utility model provides a steam extraction device moisturizing deoxidization structure which characterized in that: the steam turbine comprises a steam exhaust device shell (2), wherein the upper part of the steam exhaust device shell (2) is provided with a steam exhaust device throat part (1), the upper part of the steam exhaust device throat part (1) is communicated with a low-pressure cylinder of a steam turbine, and the lower part of the steam exhaust device throat part is communicated with the steam exhaust device shell (2);
the middle part of exhaust steam device casing (2) is provided with steam extraction mouth (3) the both sides of steam extraction mouth (3) set up hydrophobic moisturizing except that oxygen district, the lower part that hydrophobic moisturizing except that oxygen district is provided with the water seal structure the middle part that hydrophobic moisturizing except that oxygen district is provided with hydrophobic energy dissipation collector (4) group the upper portion that hydrophobic moisturizing except that oxygen district is provided with moisturizing mechanism one side that hydrophobic moisturizing except that oxygen district is provided with baffle (5), exhaust steam device casing (2) and water seal structure form semi-closed structure.
2. The steam exhaust device water supplementing and oxygen removing structure according to claim 1, characterized in that: the water seal structure is including fixed water seal ponding board (10) that sets up on steam exhaust device casing (2) to and the fixed lower water feed board that sets up on baffle (5), water seal ponding board (10) set up in the below of ponding board (8) down, and the downside of ponding board (8) is still fixed and is provided with water shrouding (9) down, does not pass through water shrouding (9) formation liquid seal through the liquid level.
3. The steam exhaust device water replenishing and oxygen removing structure as claimed in claim 2, wherein: the water seal structure is characterized by further comprising an upper water accumulating plate (7) fixedly arranged on the steam exhaust device shell (2), wherein the upper water accumulating plate (7) is located above the lower water accumulating plate (8), and liquid flows into the water seal water accumulating plate (10) from the upper water accumulating plate (7) to the lower water accumulating plate (8) and forms a folded path.
4. The steam exhaust device water supplementing and oxygen removing structure according to claim 3, characterized in that: the water seal ponding board (10) include the bottom plate and set up in the bottom plate and keep away from the overflow end plate of steam supplementing device casing tip, the height and the overflow plate top height of water seal board (9) bottom overlap, perhaps, the height of water seal board (9) bottom is less than the overflow plate top height.
5. The steam exhaust device water replenishing and oxygen removing structure as claimed in claim 2, wherein: the lower water collecting plate (8) and the water sealing plate (9) are close to the connecting angle, a steam supplementing pipe (11) is further arranged at the connecting angle, and a plurality of open holes are formed in the top of the steam supplementing pipe (11).
6. The water-replenishing and oxygen-removing structure of the steam exhaust device according to claim 1 or 2, characterized in that: the sets of hydrophobic energy-dissipating headers (4) comprise a plurality of sets, each set having a plurality of hydrophobic energy-dissipating headers (4).
7. The steam exhaust device water supplementing and oxygen removing structure according to claim 1, characterized in that: the water supplementing mechanism comprises a water supplementing main pipe (12) used for supplying water, and a plurality of atomizing nozzles (13) are arranged at the bottom of the water supplementing main pipe (12) side by side.
8. The steam exhaust device water replenishing and oxygen removing structure as claimed in claim 1, 2 or 7, wherein: the top of moisturizing mechanism still is provided with overhead gage (6), overhead gage (6) are fixed to be set up on the moisturizing device casing, overhead gage (6) slope sets up, just one side that overhead gage (6) are fixed in the moisturizing device is higher than the opposite side, and the height that highly is less than baffle (5) top of one side of moisturizing device casing is kept away from in overhead gage (6).
9. The steam exhaust device water replenishing and oxygen removing structure as claimed in claim 8, wherein: the water supplementing mechanism is arranged between one side, far away from the steam supplementing device shell, of the upper baffle plate (6) and the partition plate (5), and the position of the water supplementing mechanism is not higher than one side, far away from the steam supplementing device shell, of the upper baffle plate (6).
10. A water replenishing and oxygen removing method for a steam exhaust device, which adopts the water replenishing and oxygen removing structure for the steam exhaust device as claimed in any one of claims 1 to 9, and is characterized in that: the method comprises the following steps:
in a conventional operation working condition, the water supplement enters an atomizing nozzle (13) through a water supplement main pipe (12), atomized spraying is carried out on the top in a semi-closed space formed by the partition plate (5), the lower water accumulation plate (8), the water seal plate (9) and the water seal water accumulation plate (10), and then the atomized spraying is converged on the upper water accumulation plate (7) at the bottom to form a water film which flows into the lower water accumulation plate (8) to be converged again; a water film is formed again and flows into the water seal water accumulation plate (10), a water seal is formed under the action of the water seal plate (9), and water is finally added to form the water film through the water seal water accumulation plate (10) to exchange heat with the exhaust steam in the steam exhaust device shell (2) again and then is discharged into the water tank of the steam exhaust device;
when the unit operates in the deep peak-shaving operation condition, although the steam turbine exhaust amount is small, the steam turbine is easy to generate hydrophobic steam, the hydrophobic steam is large, more heat is provided for supplementing water and heating, and the whole operation process is consistent with the conventional operation condition;
when the water replenishing operation condition is high, when the unit is high in water replenishing, the heat provided by drainage is insufficient, after heat exchange is carried out in the semi-closed space, the internal pressure is reduced, and exhaust steam automatically enters the semi-closed space through the space formed by the upper baffle plate (6) and the partition plate (5) to exchange heat with water; the heat of drainage and the heat of exhaust steam are fully utilized; the steam with low quality is introduced through the steam supplementing pipe (11) and used as a heat source to participate in heat exchange, the steam is sprayed out of the steam supplementing pipe (11) and exchanges heat with the water films of the lower water collecting plate (8) and the upper water collecting plate (7) and then reversely flows to exchange heat with the water spraying of the atomizing nozzles (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211536118.7A CN115773162A (en) | 2022-12-02 | 2022-12-02 | Water replenishing and deoxidizing structure of steam exhaust device and water replenishing and deoxidizing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211536118.7A CN115773162A (en) | 2022-12-02 | 2022-12-02 | Water replenishing and deoxidizing structure of steam exhaust device and water replenishing and deoxidizing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115773162A true CN115773162A (en) | 2023-03-10 |
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